/*!
 *
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 *
 * Copyright (c) 2002-2018 Hitachi Vantara. All rights reserved.
 *
 */

package org.pentaho.mantle.client.commands;

import com.google.gwt.core.client.GWT;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import org.pentaho.gwt.widgets.client.dialogs.MessageDialogBox;
import org.pentaho.mantle.client.csrf.CsrfUtil;
import org.pentaho.mantle.client.csrf.JsCsrfToken;
import org.pentaho.mantle.client.messages.Messages;

public class PurgeMondrianSchemaCacheCommand extends AbstractCommand {
  public PurgeMondrianSchemaCacheCommand() {
  }

  protected void performOperation() {

    final String url = GWT.getHostPageBaseURL() + "api/system/refresh/mondrianSchemaCache"; //$NON-NLS-1$

    CsrfUtil.getCsrfToken( url, new AsyncCallback<JsCsrfToken>() {

      public void onFailure( Throwable caught ) {
        Window.alert(caught.getMessage());
      }

      public void onSuccess( JsCsrfToken token ) {

        RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, url);
        requestBuilder.setHeader("If-Modified-Since", "01 Jan 1970 00:00:00 GMT");
        requestBuilder.setHeader("accept", "text/plain");
        if (token != null) {
          requestBuilder.setHeader(token.getHeader(), token.getToken());
        }
        try {
          requestBuilder.sendRequest(null, new RequestCallback() {

            public void onError(Request request, Throwable exception) {
              // showError(exception);
            }

            public void onResponseReceived(Request request, Response response) {
              MessageDialogBox dialogBox =
                  new MessageDialogBox(
                      Messages.getString("info"), Messages.getString("mondrianSchemaCacheFlushedSuccessfully"), false, false, true); //$NON-NLS-1$ //$NON-NLS-2$
              dialogBox.center();
            }
          });
        } catch (RequestException e) {
          Window.alert(e.getMessage());
          // showError(e);
        }
      }
    } );
  }

  protected void performOperation( final boolean feedback ) {
    // do nothing
  }

}
